Printing-machine



(N0 1V I0d A W, VAUGHN- PRINTING MACHINE. No. 453,988. Patented June 9,1891.

mwse I XNWe/W VWQ UNITED STATES PATENT OFFICE.

AUGUSTUS V. VAUGHN, OF MENLO, ASSIGNOR TO F. H. KINGSBURY, OF CRESTON,IOWVA.

PRINTING- SPECIFICATION forming part of Letters Patent No. 453,988,dated June 9, 1891. Application filed July 25,1887. Renewed April 18,1891. Serial No. 389,458. (No model.)

To aZZ whom it may concern.-

Be it known that I, AUGUSTUS WV. VAUGHN,

a citizen of the United States of America, and

a resident of Menlo, in the county of Guthrie and State of Iowa, haveinvented an Improved Printing-Machine, of which the followingisaspecification.

My object is to simplify the manufacture, reduce the cost, and improvethe operation of a rotary cylinder hand-press; and my invention consistsin the construction and combination of a stationary bed, adjustabletracks to support a cylinder, a rotating cylinder, a tympan having arigid cover, cables for governing the cylinder, and a treadle, ashereinafter set forth, pointed out in my claims, and illustrated in theaccompanying drawings, in Which- Figure 1 is a top View showing thecylinder engaging the rigid cover of the tympan, as required in makingan impression and printing a sheet upon a form on the fixed bedunderneath. Fig. 2 is a side view showing the tympan in a verticalposition and the treadle combined therewith elevated.

A represents an oblong frame that may vary in size and shape as requiredto serve as a base for presses of different size. It is preferably madeof cast-iron.

B is a solid metal plate and bed retained stationary upon the base andframe A by its own Weight, or fixed thereto by means of bolts or in anysuitable way. a

O O are tracks adjustably connected with the sides of the frame A insuch a manner that they can be raised and lowered relative to the bed asrequired to regulateimpressions. They are provided with slots cl, thatextend vertically, through which pins or bolts cl, fixed to frame A,project horizontally. Nuts on the ends ofthese bolts retain the tracksperpendicular.

f f are key-seats formed in or fixed to the sides of the frame A in sucha manner that keys, quoins, or wedges can be placed between the saidseats and the under sides of the tracks 0, and readily operated to raiseor lower one or both ends of each track as required to regulate theimpression.

' G is a solid metal cylinder provided with flanges h at its ends thatoverlap the top edges of the tracks C, as clearly shown, and as requiredto prevent anylongitudinal m0vement of the cylinder.

72. are hand-wheels fixed to the flanges h.

J is the frame of a tympan hinged to the track 0 in such a manner thatit can be folded down flat upon the bed B, or elevated and inclined, asshown in Fig. 2.

k is a solid metal plate fixed on the upper side of the frame J in suchamanner that the cylinder G will engage its top surface as it is rolledover, to make an impression upon a sheet placed between the tympan andaform in the bed.

Z Z are arms extending from the rear end of the tympan, that engage therear end of the bed and restrict the backward motion of the tympan andretain it stationary, as shown in Fig. 2.

M represents a treadle connected with the free ends of the arms Z, bymeans of cords n, in such a manner that the tympan can be elevated byfoot-pressure whenever desired.

3 s are cables fixed to the inwardly-project ing flanges on the ends ofthe tracks 0, coiled around the ends of the cylinder G, and thenconnected with tension devices 2 at the opposite ends of the tracks insuch amanner that they can be stretched taut to aid in keeping thecylinder G square relative to the tracks and in facilitating andgoverning the movements of the cylinder, so that there will be no unduefriction on the flanges h and no sudden motions, jarring, or noise.

From the foregoing description of the construction and function of eachpart, the novelty, operation, and utility of my invention will beobvious to printers and persons familiar with printing machinery.

I am aware that tracks have been automatically raised and loweredrelative to a cylinder and a bed-plate for the purpose of passing over aform on the bed without'making an impression. I am also aware thattracks have been supported upon springs in such a manner that avertically -adjustable cylinder could be raised and lowered relative tothe yielding tracks to regulate impression; but my manner of combiningtracks with a frame and cylinder so that each end of each track can beadjusted vertically relative to the bed forthe purpose of regulating thepressure of the cylinder upon a form on the bed is novel and greatlyadvantageous.

I am also aware that a metal plate has been fixed to the under side ofthe frame of a t-ympan to engage a form on the bed-plate; but my mannerof fixing a solid plate upon the upper side of a tympan-frame to engagethe surface of a cylinder for the purpose of distributing the weight ofthe cylinder evenly upon the tympan and the form under it is novel andgreatly advantageous.

I am also aware that bands have been fast ened to a cylinder and takenaround the cylinder and then stretched over directing-pulleys; but mymanner of combining the ends of cords with vertically-adjustable tracksand a cylinder supported and operated upon the tracks is novel andadvantageous.

I claim as my invention- 1. The combination of the cylinder G, the

tracks 0, and the cables attached to the opposite ends of the tracks, tooperate in the manner set forth, for the purposes stated.

2. The base A, the adjustable tracks 0, the cylinder G, the cables 3,and the tension devices .2, arranged and combined substantially as shownand described, for the purposes stated.

3. The combination of a treadle with the frame J, having one or morearms Z and cord 11 attached to said arms, and a base A, having a bed 13,for the purposes stated.

4. The combination of a cylinder, tracks to support the ends of thecylinder, cables coiled around the cylinder and fastened to the ends ofthe tracks, and tension devices for stretching the cables, for thepurposes stated.

AUGUSTUS XV. VAUGHN.

Witnesses:

R. B. SHAVER, W. A. IIAWLEY.

